🚀 Building the future of Web3 and AI-powered innovation. I'm a Blockchain & AI Developer specializing in Smart Contracts, Solana development, and full stack development across decentralized ecosystems. As a Blockchain & AI Developer, I help startups, founders, and enterprises develop secure, scalable, and gas-optimized blockchain and AI solutions, from Smart Contracts to AI-driven dApps, DeFi protocols, and Solana-native ecosystems. With 13+ years of experience in Solidity, Rust, and full stack development in Web3, I'm not just a coder, I'm a technical strategist who can turn your blockchain or AI concept into production-ready products. I specialize in building Smart Contracts on Solana, Ethereum, and other blockchain networks using Rust and Solidity. ✅ Blockchain & AI Developer Services 🔗 Smart Contracts Development & Auditing • ERC20, ERC721, ERC1155, ERC404, BEP20, SPL token standards • Smart Contracts with custom tokenomics: staking, vesting, whitelisting, royalties • Audit-ready Smart Contracts with gas optimization and security best practices • Solana Smart Contracts using Rust and Anchor framework 🤖 AI + Web3 Integrations • On-chain AI data automation, AI agent integration, and model inference • Connecting machine learning APIs to decentralized apps • Smart Contracts that interact with AI-powered oracles and analytics • Blockchain solutions powered by advanced AI capabilities 💱 DeFi & Cross-Chain Protocols • DEX, lending, staking, and liquidity pool architecture • Cross-chain bridge development (LayerZero, Wormhole) • Solana DeFi ecosystem development and yield farming systems • Blockchain-based yield farming and tokenomics systems 🛠️ Full-Stack dApp Development • Frontend: React, Next.js, TypeScript, TailwindCSS • Backend: Node.js, Python, Rust, Express.js • Full Stack Development across Solana, Ethereum, and multi-chain environments • Web3 libraries: Ethers.js, Web3.js, Solana Web3.js 🔐 Security & Testing • Unit, fuzz, and integration testing (Foundry, Hardhat, Anchor) • Vulnerability mitigation in Smart Contracts: reentrancy, flash loans, overflow • Blockchain audit preparation and Rust-based security protocols 🔍 Blockchain & AI Developer Specializations • AI-driven blockchain systems & analytics dashboards • Solana token launches and SPL Smart Contracts • Blockchain-based DAO governance and voting systems • DeFi yield platforms built with Rust and Solana • Smart Contracts for zkEVM and L2 integrations • Web3 wallets and automation scripts using Rust 🧠 Full Stack Development Tech Stack • Languages: Solidity, Rust, TypeScript, JavaScript, Python • Frameworks: Hardhat, Foundry, Anchor (Rust framework), Brownie, Next.js • Chains: Ethereum, Solana, Polygon, BSC, Avalanche, Arbitrum, zkSync • Infra: IPFS, PostgreSQL, MongoDB 💬 Client Feedback • "Delivered audit-ready Smart Contracts with zero vulnerabilities." • "Blockchain protocol optimization reduced gas costs by 40%." • "Solana Smart Contracts deployment was flawless—felt like having a CTO on the team." 📞 Let's Build the Future Whether you're launching a Solana token, building blockchain DeFi apps, or creating AI-powered Smart Contracts, I'll design, develop, and deploy with confidence. As your Blockchain & AI Developer, I bring Rust expertise and full stack development capabilities to every project. 📩 Click "Invite to Job" or message me—let's bring your blockchain and AI vision to life.

Dear my Precious Client, My name is Nhan Nguyen. I'm a Senior Developer from Soin Media, a premier software outsourcing company dedicated to connecting global enterprises with elite engineering talent. My Job Success Score is 100%. And I'm one of Top Rated Plus freelancers on Upwork. I started my freelancing career in 2009. I've been working on Upwork since 2010. With 128 completed jobs, 2681 paid hours, and more than 18 year experience, I will deliver your website, web application, and mobile application smoothly and satisfactorily. You will be satisfied with the final products, and we will have a comfortable journey together from the beginning to the ending of the project. You can check my working history for previous feedback from my clients. Collaborative, committed to quality, clear communicator, reliable, accountable for outcomes, solution oriented, professional, detail oriented are what clients reviewed me. NodeJS, React, React Native, C#, Kotlin, Swift, Solidity, Rust, AI are my main tools to build your website, web application, and mobile application. We can start our working partnership at 1 of these 3 points: 1. A description of what you want me build for you. I will compose a proposal and a development plan based on your project description. 2. A UI design (in Figma, Canva, Photoshop,...) which has several screens of your website, web application, or mobile application. I will design the other screens for you. 3. An existing website, web application, or mobile application which was abandoned by your previous developer(s). I will pick up what we have and continue the development until we launch your product(s) to the market. Feel free to ask me any question. Even you won't hire me, I'm still happy to advise you and help you to get your project warm-up. Best regards, Nhan Nguyen.

In-depth Fundamentals, On-chain and Technical Analysis, Market Analysis, and Evaluation Research projects, or what could be the next gem? Understanding the market and making informed decisions requires expertise. And in this space, early and accurate information is the key! This is why you need an analyst and researcher to keep you updated and help you scale through the time-consuming tasks. What can I do for you? ✅ Market research ✅ Technical, Fundamental, and On-chain Analysis ✅ Trading guide ✅ AMAs and training sessions ✅ Degen Signals and Trading ✅ Presales and ICOs ✅ Design Trading Course ✅ Identify scams. ✅ Pitch deck presentation ✅ Low Market Cap Crypto Gems. ✅ Technical writing (research reports, whitepapers, tokenomics) ✅ Ideal YouTube scripts ✅ Community Manager (Telegram, Discord) ✅ Build Dune and Flipside dashboards. About Me: I am a financial market analyst with over four years of experience in trading and research. Over the years, I've honed my understanding of technical, fundamental, and on-chain analysis, allowing me to uncover hidden gems with 10x, 50x, and even 100x returns for clients, and I have trained students, transforming them into great analysts. I have a passion for cryptocurrency and blockchain, and I would love to put my passion and experience to work for you. Send me an invite or offer so we can look at your project's details and start immediately. Ismail A.

I help fintech startups, neobanks, and payment companies build secure, scalable products, from digital banking platforms and core banking systems to POS terminal software and payment gateway integrations. With strong experience across the full stack, I deliver end-to-end fintech solutions that are compliant, reliable, and built to scale. What I build: • Digital Banking & Neobank SaaS platforms (onboarding, KYC/AML, wallets, ledgers) • POS Terminal Solutions (Android POS, payment terminal apps, card processing) • Payment Gateway & API Integrations (Stripe, PayPal, ACH, card networks) • Core Banking Systems & financial dashboards • Secure REST APIs, microservices, and cloud-native architecture • B2B Sales outreach AI SAAS Platform just like Instantly • Food Delivery Platform Tech stack: Frontend: React, Next.js, TypeScript Backend: Node.js, Python, Java Database: PostgreSQL, MySQL, MongoDB Cloud/DevOps: AWS, Docker, Kubernetes, CI/CD I focus on security, PCI-DSS-aware development, and clean architecture so your fintech product is ready for real users and real transactions. Let’s discuss how I can help bring your digital banking or POS terminal project to life. Message me to get started.

I'm a full-stack Blockchain, Mobile & AI developer with 5+ years of experience building decentralized applications that ship at scale. Over the years, I've contributed to projects with a combined market cap exceeding $300M+ and a community of 15M+ users, including multiple protocols ranked in the Top 100 on CoinMarketCap. My work spans the full blockchain stack — Solidity smart contracts, React/Next.js frontends, and Node.js backends — with a growing focus on combining on-chain logic with AI-powered features. What I've built: A fully decentralized prediction market like polymarket ranked top 7 globally, featuring AMM-based pricing, public/private pool creation, and a live gaming suite — processing $25M+ in volume A crypto launchpad ranked top 10 globally that has raised $220M+ for projects worldwide, with tier-based allocations, vesting schedules, and community-driven token launches A ZK-based privacy protocol that raised $160M+ in presale, enabling selective on-chain data disclosure using zero-knowledge proofs A multi-chain AI crypto wallet with 50k+ active users, featuring cross-chain swaps, token management, and integrated AI assistance An AI-powered business automation platform that streamlines operations, customer interactions, and workflow management through intelligent AI agents — bridging Web3 infrastructure with enterprise-grade automation A Web3 super app with 1M+ downloads, delivering a full DeFi and crypto ecosystem in a single mobile application My core services: Smart contract development & auditing (ERC-20, ERC-721, ERC-1155) DeFi protocol & DEX development Prediction market platforms (Polymarket-style) Real World Asset (RWA) tokenization AI-powered DApp integration (ChatGPT, LangChain, Python ML) NFT marketplaces & minting platforms I deliver clean, audited, gas-optimized code with full documentation and post-launch support. Let's build something on-chain. Message me to discuss your project.

🏆 PROVEN RESULTS — NOT JUST PROMISES * Launched Utility Token to $670M Market Cap | 14,000+ Holders | $320K/Day Volume * Raised $2.7M for a Single Token Project * Generated $1.3M Trading Volume within 24 Hours of Launch * 100+ Sold-Out NFT Projects — Ethereum, Solana & Bitcoin Ordinals * 50+ Crypto & Meme Coin Projects Above $1M Market Cap * Founder of **3 Bitcoin Ordinals NFT Projects * 9 Years in Presales & Fundraising | 12 Years in Digital Marketing **💼 EXPERIENCE** I am a full-stack Crypto Marketing Expert, NFT Marketing Specialist, and Web3 Community Manager with over a decade of hands-on experience scaling blockchain projects from zero to millions in market cap. ✔ My expertise spans the entire Web3 ecosystem — from Meme Coin marketing and Token Presales (ICO/IDO) to Bitcoin Ordinals promotion, Runes, DeFi, GameFi, P2E (Play to Earn), and DAO projects. I have drafted and executed marketing strategies for 200+ successful Crypto, NFT, Meme Coin, and Web3 projects, serving 3,000+ satisfied clients globally. ✔ As a Discord Community Manager and Telegram Community Manager, I have built and managed thriving communities for some of the most competitive token launches in the space. On the social media side, I specialise in Crypto Twitter (X) growth, viral content creation, influencer coordination, and paid ad management — the complete toolkit a crypto project needs to dominate its niche. ✔ I am a Bitcoin Ordinals Specialist and an NFT Marketing Expert with a track record of completely sold-out collections across Ethereum, Solana, and Bitcoin Ordinals. Whether you need a Meme Coin marketing strategy, a Token presale campaign, or an NFT mint sold out in hours, I have done it — with receipts. **Core areas of expertise:** - Crypto Marketing & Meme Coin Marketing Strategy - NFT Marketing | Bitcoin Ordinals | Runes - ICO / IDO / Presale Marketing & Fundraising - Discord Community Manager | Telegram Community Manager - Web3 Social Media Manager (Twitter/X, Instagram, TikTok) - Crypto Content Creation | Crypto Memes - Influencer Marketing & KOL Outreach - Play to Earn (P2E) | GameFi | DeFi | DAO Project Marketing - Community Moderation & Growth **✅ WHAT YOU CAN EXPECT WHEN YOU HIRE ME** When you bring me on board, you get a seasoned Crypto Marketing Expert who treats your project like his own. Here is exactly what you can expect: ✔ A Complete, Custom Marketing Strategy No copy-paste templates. I build a tailored roadmap covering community growth, content calendar, influencer outreach, launch hype, and post-launch retention — designed specifically for your NFT, Meme Coin, Token, or Web3 project. ✔ Full Community Build & Management I will set up and manage your Discord and Telegram from scratch — channels, bots, moderation, AMA sessions, giveaways, and daily engagement. As your Discord Community Manager, I keep your community alive, active, and growing 24/7. ✔ Explosive Twitter/X Growth I will grow your Crypto Twitter following organically and through targeted campaigns, consistently increasing reach, retweets, replies, and overall engagement. I manage Twitter Ads and organic strategies simultaneously for maximum impact. ✔ NFT & Ordinals Sold-Out Execution With 100+ sold-out collections under my belt, I know exactly how to build the hype cycle needed to sell out your Bitcoin Ordinals, Ethereum, or Solana NFT project — from teaser campaigns all the way to mint day. ✔ Token Presale & ICO Launch Support I have raised $2.7M for a single project and generated $1.3M in volume within 24 hours of launch. I will manage your presale marketing end-to-end — community building, KOL partnerships, media outreach, and real-time campaign optimisation. ✔ Transparent Communication Live meetings, regular progress reports, and direct access to me throughout the project. No middlemen, no outsourcing — you work directly with the expert. --- Hashtags: `Crypto Marketing` · `NFT Marketing` · `Meme Coin Marketing` · `Bitcoin Ordinals` · `Runes` · `Token Presale` · `ICO Marketing` · `IDO Marketing` · `Web3 Marketing` · `Discord Community Manager` · `Telegram Community Manager` · `Web3 Social Media Manager` · `Crypto Content Creator` · `Crypto Community Manager` · `NFT Community Manager` · `Play to Earn Marketing` · `P2E Marketing` · `GameFi Marketing` · `DeFi Marketing` · `DAO Marketing` · `NFT Promotion` · `Solana NFT` · `Ethereum NFT` · `Crypto Twitter Growth` · `Crypto Influencer Marketing` · `Token Launch` · `Crypto Memes` · `Web3 Community Manager` · `Metaverse Marketing` · `Blockchain Marketing`

I’m Himanshu, a dedicated 𝐁𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧, 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐚𝐧𝐝 𝐋𝐢𝐠𝐡𝐭𝐬𝐩𝐞𝐞𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 providing clients with dedicated personalized service as an 𝐢𝐧𝐝𝐢𝐯𝐢𝐝𝐮𝐚𝐥 𝐟𝐫𝐞𝐞𝐥𝐚𝐧𝐜𝐞𝐫. I'm actively participating in the development of Blockchain-based solutions for Different industries. Developing a DApp to democratize the global medical device industry. The platform will disintermediate the medical device and supplies ecosystems, Development of Smart Contracts, Real Estate Investments on Blockchain, Gambling/Lottery Game on Blockchain, Donation on Blockchain. My Technical Blockchain Development Expertise: Being a full-stack blockchain developer, I have decent expertise in Blockchain development and custom smart contract application development technologies: 🛠 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: ✔️ Frontend: React.js, Next.js, Vue.js, TypeScript, Tailwind CSS. ✔️ Backend: Node.js, Django, NestJS, Laravel, Express.js. ✔️ Databases: MongoDB, PostgreSQL, MySQL. 💪 𝐓𝐨𝐨𝐥𝐬 & 𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬: ↔️ Blockchain: Solidity, Rust, Hardhat, Truffle, Anchor, Remix IDE. ↔️ Integration: Ethers.js, Web3.js, Alchemy, IPFS, The Graph, Chainlink. 🔷 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝐎𝐟𝐟𝐞𝐫𝐞𝐝: 💎 Custom token development (fungible and non-fungible). 💎 DApp & DAO creation with seamless wallet integration (MetaMask, Phantom). 💎 Smart contract audits to ensure security and reliability. 💎 Development of DEX platforms and CEX integrations. 💎 Advanced blockchain bot solutions: MEV bots, arbitrage bots. 📈 𝐒𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐳𝐞𝐝 𝐢𝐧 𝐃𝐞𝐅𝐢 & 𝐍𝐅𝐓𝐬: 🔥 Build platforms like DEXs, launchpads, and crowdfunding systems. 🔥 Develop NFTs with royalties, whitelist, dynamic metadata, and more. 💻 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬 & 𝐒𝐤𝐢𝐥𝐥𝐬: 👉 Languages: Solidity, Rust, Python, JavaScript, TypeScript, Go, C++ 👉 Frameworks: React.js, Next.js, Vue.js, Django, Express.js, Truffle, Hardhat 👉 Databases: MongoDB, MySQL, PostgreSQL, Firebase 👉 Platforms: Ethereum, Solana, Binance Smart Chain, Polygon, Avalanche, Tron 👉 Tools: Docker, Kubernetes, AWS, Terraform, Alchemy, Brownie ☑️ Blockchain: Solidity, Web3.js, Ethers.js, Truffle, Hardhat, IPFS, Ethereum, Hyperledger, Solana, Binance Smart Chain, Polkadot, Smart Contracts, ERC-20, ERC-721, ERC-1155 ☑️ AI/ML: Python, TensorFlow, Keras, PyTorch, OpenCV, Scikit-Learn, Natural Language Processing (NLP), Computer Vision, Deep Learning, Machine Learning, Data Science, Pandas, NumPy, Jupyter Notebook ☑️ Mobile Development: Native applications using SwiftUI, Swift (iOS), and Kotlin (Android), and hybrid development with React Native, Flutter, and Ionic. 🚀 𝐍𝐨𝐭𝐚𝐛𝐥𝐞 𝐀𝐜𝐡𝐢𝐞𝐯𝐞𝐦𝐞𝐧𝐭𝐬: 🌟 Developed an NFT marketplace with multi-chain capabilities (Ethereum & Solana). 🌟 Built DeFi protocols with staking and liquidity mechanisms, optimizing gas fees by 30%. 🌟 Created cross-chain bridges connecting major blockchain ecosystems. 🌟 Contributed to $10M+ funding raised for blockchain startups. 💬 𝐋𝐞𝐭’𝐬 𝐂𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐞! Click the "Invite to Job" button to start your blockchain journey today! Together, we’ll craft the future of decentralized solutions. 🌐✨ How do we communicate and report? We always prefer to keep our work transparent, and for this reason, we like to be in touch with our valued clients on a daily, weekly & monthly basis. ✅ Upwork Message Board ✅ JIRA ✅ Azure DevOps Server ✅ Asana ✅ Trello ✅ Zoho Projects

I am a passionate and results driven AI Expert, Blockchain Developer, and Full Stack Engineer based in Bangalore, India, with extensive experience designing, developing, and deploying scalable web applications, AI powered solutions, and decentralized platforms. My expertise is in Artificial Intelligence, Machine Learning, Generative AI, Blockchain Development, and modern Full Stack technologies. I focus on building innovative products that leverage intelligent automation to create next generation applications. Artificial Intelligence & Machine Learning Expertise - AI & Generative AI - Large Language Models (LLMs) - OpenAI, Claude Integration - AI Agents & Autonomous Workflows - AI Chatbots & Virtual Assistants - Prompt Engineering - AI Powered SaaS Applications - Conversational AI - Knowledge Base Systems - AI Automation Solutions - AI Model Deployment Blockchain Development Expertise I specialize in designing and developing secure, scalable, and production ready blockchain applications. - Blockchain Technologies - Ethereum - Solidity - Solana - Rust - Web3.js - Ethers.js - Smart Contract Development - Layer-2 Solutions Blockchain Solutions - Token Creation (ERC-20, ERC-721, ERC-1155) - NFT Minting Platforms - NFT Marketplaces - NFT Staking Platforms - DeFi Applications - Staking & Yield Farming Protocols - ICO / IDO Launchpads - Decentralized Exchanges (DEX) - Payment Protocols - DAO Development - Cross-Chain Applications - Blockchain Wallet Integrations - Decentralized Donation Platforms - Token Launchpads - Prediction Market I continuously stay updated with emerging trends across AI, Web3, DeFi, and decentralized infrastructure to deliver innovative and future ready solutions. Full Stack Development Expertise Front-End Development - JavaScript (ES6+), TypeScript, React.js, Next.js, Gatsby, Redux, HTML5, CSS3 / SCSS, Tailwind CSS, Material UI, Bootstrap, Responsive UI/UX Design Back-End Development - Node.js, Express.js, REST APIs, GraphQL, Socket, Microservices Architecture, Authentication & Authorization Systems Databases & Cloud - MongoDB, SQL Databases, Supabase, Firebase, AWS, Cloud Deployment & Infrastructure, CI/CD Pipelines Project Expertise ✔ AI-Powered Applications ✔ AI Chatbots & Virtual Assistants ✔ SaaS Platforms ✔ Blockchain & Web3 Applications ✔ DeFi Platforms ✔ NFT Marketplaces ✔ Crypto Exchanges ✔ E-commerce Platforms ✔ Custom CMS & CRM Solutions ✔ Enterprise Applications ✔ API Development & Integrations ✔ Real-Time Applications ✔ High-Traffic Systems ✔ Custom Business Platforms I believe successful projects are built on strong communication, transparency, and long-term collaboration. Whether you're building an AI product, blockchain platform, SaaS application, or enterprise solution, I focus on understanding your business goals and delivering scalable, high-quality results. I am available for both short-term and long-term engagements and am happy to discuss your requirements via audio/video calls, meetings, or collaborative planning sessions.

I'm a Full-stack Blockchain and Smart Contract Developer with 9+ years of experience building secure, scalable, and innovative Web3 products from DeFi platforms and DAOs to crypto exchanges and ZK integrations using Python and GoLang. I combine hands-on development with real-world insight as an active crypto trader on platforms like Binance and Poloniex, bringing a deep understanding of both blockchain technology and market dynamics. 🔐 Smart Contract Development & Auditing (EVM, Solana, ZK): ▪ EVM-compatible chains: Ethereum, Arbitrum, Optimism, Base, BNB Chain, Polygon ▪ Solana: Rust, Anchor, SPL tokens, Phantom wallet integration ▪ Token standards: ERC-20, ERC-721, ERC-1155, SPL ▪ Back-End Development: Node.js, Python, Nest.js, MySQL, RESTful APIs, GraphQL, and server-side integration ▪ Front-End Development: React.js, Next.js, Vue.js, Nuxt.js, HTML5, CSS3, and JavaScript (ES6+) Database Management: SQL, MySQL, PostgreSQL, MongoDB 🏗️ Blockchain Product Development: ▪ DApps for DeFi, NFTs, DAOs, DePIN, and enterprise use cases (logistics, healthcare, insurance, banking) ▪ Full-stack dApp development: Python, Golang, React.js, Next.js, Tailwind, TypeScript ▪ Web3 integrations: ethers.js, web3.js, viem, wagmi, RainbowKit ▪ Protocols & tools: IPFS, The Graph, Chainlink, Pyth 📈 Crypto Platforms & Trading Systems: ▪ Multi-currency wallets (hot/cold) using native nodes or APIs (Coinbase, Fireblocks, BlockCypher) ▪ Crypto exchanges with real-time trading, KYC/AML, order books, and secure Web3 integration ▪ Fiat-to-crypto gateways with Stripe, PayPal, and credit card support ▪ Swap services via DEX APIs (e.g., ShapeShift, Changelly) ▪ Market tracking platforms with live charts and portfolio tools ▪ Mobile crypto wallets: Flutter, React Native, Swift, Kotlin ▪ RESTful APIs & WebSocket services for external integrations ▪ Cross-platform desktop apps for Windows/macOS/Linux AI Automation Tool: Claude, Make, n8n 🧠 Leadership & Consulting: Sprint planning, technical documentation, and developer onboarding Code reviews, PR management, and mentoring junior engineers Tools: GitHub, JIRA, Trello, Slack, Notion Whether you're launching a new dApp, building a trading platform, or need a smart contract audit. I deliver clarity, security, and execution to turn ideas into reliable Web3 products.

❗️𝗚𝗲𝘁 𝗮 𝗙𝗥𝗘𝗘 𝟒𝟎-𝗺𝗶𝗻𝘂𝘁𝗲 𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 𝗖𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻❗️ I’m a senior blockchain engineer focused on building and scaling production-grade Web3 systems, from smart contracts to full DeFi architectures and backend integrations. I collaborate with security auditors (including Certik) on selected projects when formal audit stage is required, but my main focus is clean architecture, secure contract design, and long-term maintainability before audit even becomes necessary. 🏆 Blockchain Expertise 11+ years building Web3 infrastructure, including: Smart contract development (Solidity, Rust, Move) Tokenomics & stablecoin architecture DeFi protocols: staking, liquidity pools, AMMs, lending/borrowing Wallet & blockchain integration Cross-chain bridges & interoperability Security audits, gas optimization, and threat analysis Node setup, backend APIs, indexing & on-chain data pipelines 𝗛𝗶𝗴𝗵𝗹𝗶𝗴𝗵𝘁𝗲𝗱 𝗣𝗿𝗼𝗷𝗲𝗰𝘁𝘀: Gold-backed Stablecoin System (Liechtenstein Launch) ✔ KYC onboarding, Sumsub integration ✔ Smart contracts on Ethereum + Polygon ✔ Oracle pricing + OTC gold price feeds ✔ Token mint/burn mechanics ✔ Reserve-backed auditing model ✔ Whitelist & transfer-restriction compliance ✔ Storage-fee mechanism (token balance decay) ✔ Full on-chain/off-chain architecture DeFi Protocols (AMMs, staking, farming) ✔ Smart-contract suite (Solidity) ✔ Reward distribution mechanisms ✔ Price oracle integration (Chainlink) ✔ Security hardening & audit fixes NFT platforms & minting engines ✔ ERC-721 / 1155 collections ✔ Royalty logic, metadata generation ✔ Claiming contracts, allowlists, randomness 𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸: Smart Contracts: Solidity, Rust (Solana), Move (Aptos/Sui) Frameworks: Hardhat, Foundry, Truffle, Anchor Security: Slither, Mythril, Echidna, Certora On-Chain Data: TheGraph, SubQuery, custom indexers Blockchains: Ethereum, Polygon, BNB Chain, Arbitrum, Optimism, Avalanche, Solana, TON Backend: Node.js, NestJS, PostgreSQL, Redis, Docker Tools: Chainlink, Safe (Gnosis), IPFS, Pinata, Fireblocks Want a secure, scalable blockchain product, not a risky MVP? Send the documentation, and let’s build it correctly from day one. 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀: Blockchain, Web3, Blockchain Developer, Web3 Developer, Smart Contract Developer, Solidity Developer, Rust Developer, Move Developer, Ethereum Developer, DeFi Developer, Smart Contract Audit, Security Audit, Tokenomics, Stablecoin Development, NFT Development, ERC20, ERC721, ERC1155, Solidity Engineer, Blockchain Architecture, DApp Backend, Oracle Integration, Chainlink, Hardhat, Foundry, Web3 Security, Multi-Chain Deployment, DeFi Protocol, Yield Farming, Staking Contract, Vesting Contract, Governance Token, On-Chain Data, TheGraph, EVM Developer, Crypto Developer, Blockchain Consultant, Token Development, ICO/IDO Smart Contracts, Bridge Development, Layer 2 Developer, Polygon, Arbitrum, Optimism.